Oil-distributing head for rotary oil burners



J. SCHEMINGER, JR

OIL DISTRIBUTING HEAD FO R ROTARY OIL BURNERS Jan. 12 1926.

Filed April 1'7, 1924 2 Sheets-Sheet 1 Jan, 1 2, 1926. 1,569,580

J. SCHEMINGER. JR

OIL DISTRIBUTING HEAD F OR ROTARY. OIL BURNERS Filed April 17, 1924 2 Sheets-Sheet 2 v 4 I 1 5 .y; Y z

Patented Jan. 12, 1926.

UNITED STATES 6 8 PATENT OFFICE.

3 JOHN SCHEMINGER, JR, OF PROVIDENCE. RHODE ISLAND, ASSIGNOR TO AETNA AUTO MA'IIG OIL BURNER, INCORPORATED, OF NEW YORK, N. Y-, A CORPORATION OF NEW YORK.

OIL-DISTRIBUTING HEAD FOR- ROTARY OIL BURNERS.

Application filed April1v7, 1924. Serial No. 707,266.'

To all whom it may concern:

Be it known that I, JoHN SCHEMIN-GER, Jr., a citizen of the United States, residing at Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Oil Distributing Heads for Rotary Oil Burners; and I dohereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to makeand use the same.

This invention relates to liquid fuel burners of the type shown and described in my Patent No. 1,442,786, dated January 16, 1923, for improvements in controlled rotary oil burners, and more particularly to an improved oil distributing head for burners of the character referred to.

- The objects of the invention are to provide simple and eflicient meansfor feeding and atomizing fuel oil and commingling air therewith in such manner as .to effect a more thorough atomization of the oil and a more perfect admixture of the atomized oil and air to support combustion than is accom- "plished by such means as have heretofore been employed forthis purpose.

" The invention will first be hereinafter more particularly described, with reference to the accompanying drawings, which are to be taken as a part of this specification, and then pointed out in the claims at the end of the description. In said drawings,

Fig. 1 is a vertical sectional. elevationof the head portion of a rotary oil burner embodying my invention, associated parts'being omitted or partly broken away;

Fig. 2 i's a horizontal sectional plan view of thelburner, taken on the line '22 of Fig. 3 is a vertical sectional view, similar to that shown in Fig. 1, of a modification of the burner head, and

Fig. 4. is a horizontal sectionalplan view, 'taken on the line 4-4:,0f Fig. 3.

Referring to said drawings, in which the same. reference letters are used to denote corresponding parts in different views, the letter A may denote a hollow casting or standard within which -a vertical hollow shaft B carrying theburner-head has its bearings. On the standard A is mounted a trough-like annular member 0 of the burner, having an inwardly turned flange resting upon the to or flanged portion of the standard B, an having its outer edge upturned and supporting an inturned or inwardly projecting annular portion of an L-shaped ring C within the upright portion of which is secured a cylindrical member G on the inner side of which is formed an outwardly extending shelf-like flange 0 upon which is supported the inner portion 0 a w1re mesh or other reticulated or screen like member to provide a support for a' body of asbestos or other refractory material D surrounding theburner head between it and the inner wall of the furnace or combustion chamber. The member C is supported by means of lugs G which rest upon and are bolted or otherwise secured to lugs 0 on the inner side or circumference of the member G The inner wall or ring of the combustion chamber may be supported u on the body D of refractory material, an beside the ring d is placed a gas pipe E, for delivering a jet of gas adjacent the burner for maintaining a pilot light to start the burner when su plied with a suitable mixture of air and uel oil, I

On the reduced upper end of the vertical shaft B is secured the hub portion F of an oil distributing plate G of dish-like or and I by means of apertured flanges on the upper and lower edges thereofto receive fastening bolts passing through registering apertures in said flanges and plates, or by spot-welding or other suitable means. The plates G and I are of such size that their outer edges or peripheral portions just clear the inner wall of the cylindrical ring C during rotation of the distributing head; the central 0 ening through the bottom plate being of suflicient size to provide a free assage for. air enterin" from below -members into the lower .end of the upper member and pass thence upwardly around the tubular shaft into the space below the imperforate hub portion of the oil distributing plate and thence between the fan blades and discharged by centrifugal force" into the annular space between the-u per ring of the burner and the periphery 0 the distributing plate." An oil feed pipe K extends up through the tubular vertical shaft B and has secured thereon an inverted cuplike or bell-shaped member L over the surface of which the oil flows onto the hub portion of the distributing plate G. As the plate G revolves the-oil is spread evenly and uniformly over the surface thereof and discharged at. its periphery by centrifugal force into the current of air induced by the fan. 'A cover plate, M, similar to the distributing plate G but inverted, is placed over the distributing plate, with its peripheral portion slightly separated from the periphery of said distributing plate, by

means of suitable spacing devices so as to provide a restricted passage for the escape of the atomized oil. Said cover plate has a central opening therein to permit access to the inner plate, and said opening is surrounded by an upturned flange on which is removably secured a cap to close said opening. As will be seen, the peripheral poritions of the. distributing plate and cover plate extend to a point nearly in line with the inner wall of the cylindrical member or ring C of the burner so that combustion takes place at a point removed from the distributing head.

In operation, in starting, by rotation of the burner head, air is drawn downwardly between the annular members G and C of the burner into the annular space surrounding the vertical shaft and thence passes inwardly into and through the annular space below the hub portion of the dis tributing plate and from thence into the spaces between the fan blades and out between the periphery of the distributing plate and the upper end of the ring C and simultaneously oil discharged by the central. feed pipe onto the spreader and distributed over the surface of the distributing I tributing and cover plates, upon or into an a thin layer or film through the restricted plate and the atomized oil is discharged in passage between the peripheries of the disupwardly moving current of air induced by the fan. On reaching the inner wall 'of the combustion chamber the mixture of air and atomized oil is ignited by the usual gas pilot or inclination of the main portion 0 the distributing plate, the oil under the action of centrifugal force is spread evenly over the entire plate before being finally thrown off at the periphery thereof, thus insuring delivery from the periphery of said plateof a thin layeror film of oil of an even thickness throughout its entire annular length or circumference, and as the oil is thrown off the distributing late it is caught up, supported and earned forward by the air issuing from between the fan blades and passing through the restricted annular space between the upper edge of the inner ring of the burner and the periphery of the distributing plate, as indicated by the arrows in Fig. 1 of the drawings. In this manner apractically fixed amount of air and oil to produce the pro r mixture is delivered continuously to the urner and anadmixture of finely atomized oil and air is thrown outagainst the combustion ring from whence it passes upwardly into the fire-box area to support'combustion. Thus combustion is constantl maintained within the fire box area, aroun and removed from the distributing head and against the combustion ring and upwardly therefrom, with the result that the life of the distributing head is greatly increased, and also the velocity of the flow of air and consequently the oil into the fire box by reason of the atmospheric pressure and restricted space through which the air escapes into the combustion chamber. The described construction of the distributing plate serves to effect an even delivery of oil therefrom, and 'by reason of the presence of the cover plate and the remoteness of combustion from the periphery of the distributing plate the film of 011 traveling over the distributing plate is. protected to a large extent from the intense heat of the fire box, and 'by thus protecting the oil from undue heating while on the .distributing plate the surface of said plate is kept free from deposits of carbon, soot, etc. It will be understood of course that the size or diameter of the combustion ring in the fire box or combustionchamber will be such as seems best suited to the particular fire box with which it is used, and the size or diameter ofthe distributing head to be used therewith will be correspondingly varied.

In Figs. 3 and 4 illustrated a modified form of distributing plate; otherwise the construction is substantially the same as that shown in Figs. 1 and 2 of the drawings. In this-modification, the distributing plate is provided with a double of the drawings have;

-series of openings therethrough having their axes extending at an angle to the periphery of the plate, substantially identical with the openings through the spray plate shown in my Patent No. 1,327,256, dated January 6, 1920; such perforations being used to permit a portion ofthe aircurrent induced by the fan to pass through the, distributing plate, for the double purpose of cooling the oil and setting; up atomization before the oil leaves the plate.-

Having thus described my invention, what I claim as new and desire to secure by Let-' ters Patent of the United States is:

1. In combination with a cylindrical burner member depending into and spaced from a subjacent annular member constructed to provide an air passage between it and said cylindrical member leading downwardly into the latter member, an oil digstributing head revolubly mounted within the upper part of said cylindrical member; said head comp-rising upper and lower rotary plates of substantially dish-shaped form secured together with the concave surfaces thereof confronting so as to provide an un obstructed annular space therebetween and converging toward their peripheral portions which are spaced apart so asto provide a restricted peripheral passage for oil; said lower plate having fan blades on its under side extending at an angle to the radius of the plate and arranged within said cylindrical member so as to draw air upwardly and force it out between said blades underneath and up into afilm of oil discharged at the periphery of said rotary plates; said platesandfan blades being supported on a vertical shaft, and a feed pipe for discharging oil into said space.

2. The combination, in a rotary oil burner, with a cylindrical member extending downwardly into and spaced from an annular member constructed to provide an air passage betwcen it and said cylindrical member, of a distributing head revolubly mounted within the upper part of said cylindrical member; said head comprising triple annular plates of substantially dish-shapedform revolubly supported on a vertical driving shaft; the top plate having its concave surface confronting the concave surface of the' intermediate plate, and the bottom plate having a central opening therein to provide an air passage around said shaft, and a series of fan blades between said intermediate and bottom plates extending atan angle to the radius of the plate, whereby air is drawn downwardly and upi throu h said central opening and forced outwar ly under and into a film'of oil thrown out, by the distributing head.

3. An oil distributing head comprisin an annular distributing plate of substantlally concavo-convex form having a hub portion said distributing on a vertical tubular shaft, said shaft having a feed tube therein through mounted which oil flows to the burner; s id tube carrying at its delivery end a be l-shaped concave surfaces thereof above and around said bell-shaped device, the peripheral por tions of said plates being slightly separated to provide a restricted annular passage therebetween through which the atomized oil escapes, and a series of fan bladesisecured on the under side of said distributing plate at an angle to the radius of the plate for generating and discharging a current of air upwardly into the atomized oil as it is discharged around the periphery of said distributing plate. 4. An oil distributing head comprising a rotary plate of substantially dish-shaped form having a hub portion mounted on a vertical tubular shaft containing a feed tube through which oil flows onto the concave surface of said plate,'a cover plate arranged over and separated from said distributing plate and revoluble therewith; the peripheral portions of said plates being slightly separated to provide-a restricted annular space for the passage of oil into the combustion chamber, and means for inducing a' current of air below said distributing plate and discharging the same into the oil issuing from said passage; said meanscomprisin fanblades carried by said distributing p ate and adapted to force air upwardly into a film of oil discharged around the periphery of said distributing plate; head being arranged within a cylindrical burner member mounted upon and within and spaced from an annular member supported upon a trough-like annular member carried by the burner supporting standard in which said [shaft has its bearing, whereby air is drawn from around said cylindrical member downwardly and inwardly and thence upwardly around said 7 shaft. and caused to pass out under and into.

an outflowing film of oil discharged at the periphery of said distributing plate. I

5. A distributing head for rotary oil burnerscomprising triple annular plates of substantially dish-shaped form fixed on a vertical shaft; the top plate having-its concave surface confronting the concave surface of' the intermediate plate, and the bottom plate having a central opening thereinthrough which saidshaft extends, and a series of fan blades between the intermediate and bottom plates extending at an angle to the radius of the plate; the fan blades carried by said head being arranged within a cylindrical burner member surrounded by an annular member constructed'so as to provide a passage between it and said cylin- 'drical member, so as to adapt said fan blades to draw air through said -central opening and force the same upwardly into a film of oil thrown outi by the distributing head.

I 6. An oil distributing head comprising upper and lower rotary plates of substantially dish-shaped form secured together provide an unobstructed space between the as to provide an airpassage between it and confronting surfaces thereof and above said upper end of said shaft, and, said lower plate having fan blades on .the underside thereof extending at an :angle to the radius of the plate and arran ed within a cylin-' drical burner member epending into and spaced from a subjacent annular member constructed to rovide an air passage between it and said cylindrical member, and a feed pi e for discharging oil into said space; sai fan blades being adapted to draw air from around said cylindrical member downwardlyand inwardly and upwardly and force the same out between said blades into a film of oil discharged at the periphery of said head.

7 Anoil distributing head comprising a rotary plate of. substantially dish-shaped form having fan blades on the under side thereof extending at an angle to the radius of the plate, a cover-plate of substantially dish-shaped form inverted secured uponthefirst named plate with the concave surfaces of the two plates confronting and the peripheral portions thereof spaced apart to provide a restricted passage for oil therebetween; said plates being supported on a vertical shaft extending up through said first named plate and terminating below said cover-plate sothat an unobstructed space is provided between said cover-plate and the upper end of said shaft; said head being revolubly fitted within a cylindrical burner member depending into and spaced from a subjacent annular member supported below said cylindrical member and constructed so said cylindrical member, whereby air is drawn by said fan blades from around said cylindrical member downwardly and inwardly and caused .to pass upwardly be-v tween said fan blades and out under and into an out-flowing film of oil dischargedat the periphery of the distributing head.

8. An oil distributing head comprising a rotary plate having a concave upper surface and a hub portion mounted on a vertical shaft, a feed tube carrying a spreading device for distributing oil over the concave surface of said plate, means for inducing an out-going upwardly moving current of air around the periphery of said plate, a cover plate of substantially dish-shaped form inverted arranged over and separated from said distributing plate so as to provide an unobstructed space between the two plates above the upper end of said shaft; the peripheral portions of said plates being slightly separated to provide a restricted annular.

passage through which the oil is ejected by centrifugal force into the induced current of air at the periphery of the distributing plate; said means comprising a series of vertically disposed plates or fan blades carried by said distributing plate and extending at an angle to the radius of said plates.

9. An oil distributing device for rotary oil burners, comprising upper and lower annular plates revolubly mounted on a driving shaft and having substantially concave confronting surfaces so as to provide therebetween .an unobstructed space around and overlying the upper end of said shaft; said plates converging toward their peripheries; the peripheral portions thereof being substantially flat and arranged in close proximity so as to provide a restricted 'passage for oil to escape under the action of centrifugal force into an adjacent fire-box or combustion chamber, a series of fan blades rotatable with said plates and arranged in a circle around said shaft at an angle to the radius of the plates, for inducing and discharging a current of air at the peripheries of said plates under and into an outgoing film of atomized oil issuing from said restricted passage, and mean fordelivering oil upon the concave surface of said lower plate.

vIn testimony whereof I affix my signature.

JOHN SCHEMINGER, JR. 

